Boat-propulsion means



Oct. 23, 1928.

C. L. YOUNG ET AL BOAT PROPULSION MEANS Filed Nov. 29, 1927 2Sheets-Sheet Inventor Oct. 23, 1928.

C. L. YOUNG ET AL son PROPULSION MEANS Filed Nov. 29, 1921 2Sheets-Shoat 2 llll I Inventor C l. ioic up I. I, s

v Attornqy;

Patented Get. 23, 1 928.

nit-en STATES CARL L. YOUNG AND. ALBERT 13.

A 1,6ss,513-

PATENT orries.

ROBERTSON, or ALMARILLO, TEXAS.v

BOAT-PROPULSION MEANS.

Application filed November propeller being mounted in the front end ofthe tube and a pushingpropeller being arranged within the rear end ofthe tube, for

causing the rapid flow of the water there through.

This arrangement creates a vacuum in front'of the ship and eliminatesthe Vacuum at the rear end of the ship, thereby reducing resistance, andcausing'the boat to run more level over high swells or waves.

In the drawings Figure 1 is a side elevation of a boat construeted inaccordance with one form of theinvention.

Fig. 2 is an enlarged longitudinal section through the forward end ofthe tube arrangedupon the hull of the boat, and within which is mountedan operating propeller.

Fig. 3 is a front end of the ship constructed in accordance with thepresent invention.

Fig. i is a view similar to' Fig. 1, disclosing a slightly modified formof construction, and Fig; 5 is a fragmentary front elevation of thismodification. 1

First having reference to Figs. 2 and 3, 5 designates a generallyconventional boat, the hull of which is formed throughoutits entirelength with a tube or passage 6, preferably of circular shape in crosssection.

Mounted within each end of this. tube or passage 6 is a spider 7 formedcentrally with a longitudinally extending-sleeve 8. Mounted within thesleeve of each spider 1s a-short propeller shaft 9, the outer end ofwhich is equipped with a generally conventional boat propeller 10.

The inner end of each propeller shaft -9is universally attached as at 11to inwardly and upwardly extending power shafts 12. As in- 29, 1927.serau Ito/236,437.

dicated by the dotted lines in Fig. 1, these.

power shafts 1212 are operatively associated with a the boat 5. v V

Obviously, the movement of theboatthru the water, will cause thesuction-of the Water at the forward end of the boat, whereupon thewaterwill enter the tube 6 and move fastly through the water being broughtabout power plant 18 arranged within through the medium of thepropellers 10, at a r l the front and rear end of said tube. This willcause the smooth riding of the boat upon the watery-and will eliminatethe vacuum atjthe rear end of the boat, which retards the speed of boatsnow generally in use.

or passage being slightly raised as clearly indicated. The forward endof this tube or passage 6- has arranged therein, a suitable grille 14.for preventing the entrance of foreign matter into said 'tube orpassage.

In this instance, the boat 5 is equipped with a pair of power plants1313, from which rear ends of which pass through the raised ends of thetube or passage 6 and that are equipped at theends of this tubeor'passage with suitable propellers 1616. SubstantiaL and 3.

extend horizontal power shafts '1515, the

The modifications disclosed in Figs. 4 and 5 consist of alongitudinally, extending tubeor passage6 formed directly within thehull of the boat 5, the opposite ends of this tube the same results aresecured in this instance,

as in the construction lnd cated in Figs. ,1, 2:

Having this describedour invention, what we claim as new is z r I Ina'boat propulsion means, a longitudinal water tube arranged at thebottom side of the hull of the boat and being open at its oppo-Q siteends, the spider arranged within each end of the tube, a sleeveextending through each spider and projecting forwardly and rearwardly'thereof, a stub shaft mounted for ro tation within said sleeve, apropeller onthe outer end of each shaft, and power driven shaftsuniversally connectedto the'respectiveinner ends of the respective stubshafts.

In testimony whereof we affix tures.

CARL L. YOUNG.

ALBERT BLROBERTSON.

our signa-

